insanity — in·san·i·ty n 1: unsoundness of mind or lack of the ability to understand that prevents one from having the mental capacity required by law to enter into a particular relationship, status, or transaction or that releases one from criminal or… … Law dictionary

Exculpation — Ex cul*pa tion, n. [Cf. LL. exculpatio.] The act of exculpating from alleged fault or crime; that which exculpates; excuse. [1913 Webster] These robbers, however, were men who might have made out a strong case in exculpation of themselves.… … The Collaborative International Dictionary of English